Concrete is really hard to crack don't you think?
Answer:
Believable
Explanation:
I think this is the answer.i know credible means like when you have a credible source likes it's a good source.so I hope this helps!
They seemed to fight not for any of the usual reasons—the "the struggle for lands, struggle for power of one group over another, expansion of population"—but because war was part of their tradition. Warfare is "an invention," Mead concluded, like cooking, marriage, writing, burial of the dead or trial by jury.
I think North American Birds Illustrated is a good book to use, because it would show you pictures of different birds, with their names & characteristics:)
